@alwatr/is-number/dist/main.mjs

A simple utility to Check the value is number or can convert to a number, for example string ' 123 ' can be converted to 123.

/* @alwatr/is-number v5.7.9 */

// src/main.ts
function isFiniteNumber(value) {
  if (typeof Number.isFinite === "function") {
    return Number.isFinite(value);
  }
  return typeof value === "number" && isFinite(value);
}
function isNumber(value) {
  if (typeof value === "number") {
    return value - value === 0;
  }
  if (typeof value === "string") {
    const trimmed = value.trim();
    if (trimmed === "") return false;
    const num = +trimmed;
    return isFiniteNumber(num);
  }
  return false;
}
function toNumber(value) {
  if (typeof value === "number") {
    return value - value === 0 ? value : null;
  }
  if (typeof value === "string") {
    const trimmed = value.trim();
    if (trimmed === "") return null;
    const num = +trimmed;
    return isFiniteNumber(num) ? num : null;
  }
  return null;
}
export {
  isFiniteNumber,
  isNumber,
  toNumber
};
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